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US 7,679,598 B2Granted
Image display device
AssigneeHitachi, Ltd.
InventorsMakoto Tsumura, Tsunenori Yamamoto, Tatsuki Inuduka
Life of this patent
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Abstract
An image display device includes a pair of transparent substrates, a liquid crystal composition and at least two types of color filters disposed between the pair of substrates, at least two types of light sources, and a light source controller. Each of the light sources generating peak wavelengths of at least two colors, wherein the peak wavelengths are different from one another. The light source controller switches on and off the light sources in time sequence within one frame period.
Claims18
An image display device comprising:
- a pair of transparent substrates;
- a liquid crystal composition and at least two types of color filters disposed between the pair of substrates;
- at least two types of light sources, each of the at least two types of light sources generating peak wavelengths of at least two colors, the peak wavelengths being different from one another;
- and
- a light source controller which switches on and off the at least two types of light sources, which generate the peak wavelengths of the at least two colors, in time sequence within one frame period,
- wherein each of the at least two types of light sources has an emission distribution which is different from an emission distribution of another of the at least two types of light sources.
3 more elements
Dependencies are inferred from the claim text.